812 LXV. C6MtOSlfite. [Vittadima. 



i, V. macrorrhiza (large-rooted), A. Gray in Proc. AmeK Acad. v. 118; 

 Benth. Fl. Austr. iii. 492. A perennial with a thick woody stock and slender 

 erect not much-branehed stems of about 6in., or 1ft. when luxuriant, glabrous or 

 scabrous-pubescent. Leaves linear, or the lower ones linear-euneate, ^in. long or 

 less, or rarely nearly lin., the upper ones small and distant. Flower-heads on 

 long terminal peduncles, solitary or very loosely corymbose. Involucre hemi- 

 spherical, the bracts narrow and acutely acuminate, the inner ones 3 lines long. 

 Ray-florets nofcquite so numerous as in V. scabra, narrow but longer than the 

 pappus, although usually revolute so as to appear shorter; disk-florets- fewer, 

 longer than the involucre. Achenes very flat, with thickened margins, without 

 any or with a single short rib on their faces, sprinkled with appressed hairs. 

 Pappus rather unequal. — Euryhiopsis macrorrhiza, DC. Prod., v. 260. 



Hab.: Islands of the Gulf of Carpentaria, iJ. B?-ojom ; Broadsound, R.. Brown (apparently the 

 same species, although wtth rather longer leaves). 



18. CONYZA, Linn. 



(From the Greek name of a gnat ; the powdered leaves of some species having 

 been used to drive away gnats and fleas.). 

 Involucral bracts numerous, narrow, nearly equal or imbricate, in several 

 rows. Receptacle flat or slightly convex, without scales. Ray-florets female, 

 numerous, in several rows, all tubular, filiform, shorter than the involucre; 

 disk-florets few, hermaphrodite, tubular, 5-toothed. Anthers obtuse at the base. 

 Style branches narrow, somewhat flattened, with lanceolate tips oi" appendages 

 papillose outside. Achenes small, flattened, the margins usually thickened. 

 Pappus of copious capillary bristles. — Herbs. Leaves alternate, entire, lobed or 

 dissected. Flower-heads nsually paniculate. 



The genus as above defined, and as understood by De CandoUe, eompi-ises a considerable 

 number of species dispersed over the warmer parts of the globe. Two of the Australian' 

 species are widiely spread over tropical Asia, and one of them is equally abundant in Africa. 

 The genus is closely allied to the section Ganotus of Erigeron, differing in the total absence of 

 any ligulate expansion of the ray-florets ; the softer, moie copious pappus, ^nd the larger pro- 

 portion of female florets to the hermaptoodite ones, give also to the flowervheads a somewhat 

 different aspect. Prom Bliimea (to which Schultz-Bipontin'us and Miquel pi'bpose to transfer 

 the name of Gonyza) it differs in the want of tails to the anthers Benth. 



A shrub often 8 or Oft. Leaves lanceolate, 3 to Sin. long, sharply toothed, 



. young growth and inflorescence tomentose 1. C. elata. 



Tall branching, nearly glabrous, viscid plant. Leaves lanceolate, mostly 



entire 2. C. viscidula. 



Hirsute annuals or biennials. Leaves obovate or oblong, coarsely toothed 



or pinnatifid 3. C. mgyptiaca. 



1. C. elata (tall), Bail. Bot. Bull. viii. A tall rambling shrub, often 

 attaining the height of 9ft. or more. Stems prominently Striate. Leaves 

 lanceolate, sharply toothed and acuminate, 3 to Sin. long, the. petioles short 

 and slender, the primary veins few and distant, the young growth and inflores- 

 cence hoary-tomentose, otherwise nearly glabrous. Flower-heads in small 

 corymbs, terminating in lateral branches, clustered or on elongated peduncles. 

 Involucral bracts narrow-linear, in 2 or 3 series, the inner ones about 3 lines 

 long, the outer ones broader and only 1 or 2 lines long. Receptacle densely 

 hairy. Outer florets female, with very slender tubes, the lobes setaceous, the 

 long exserted style-branches very narrow and glabrous ; the disk or central 

 florets few, male (or hermaphrodite) florets with much wider tubes enclosing. the 

 anthers, corolla-lobes as in the males, bearing prominent white bristles ; style- 

 branches flattened and echinate, but not so far exserted, but much broader than 

 those of the female florets.- , Pappus slightly exceeding the involucre, 1-seriate, 

 white. Achenes silky, and flattened, angular, or more or less ribbed. 



Hab.: Abounding in the scrubs of the Bussell Elver, and attaining the height of 12 or 14ft., 

 Bellenden Ker Expedition; Barron River scrubs, E. Cowley. 



